锕系原子核自发裂变性质的理论研究

运用推广的液滴模型（GLDM）来确定锕系原子核的自发裂变势垒， 采用量子力学中的WKB近似方法对相应自发裂变的半衰期进行了研究。 在GLDM中， 首次考虑了微观Strutinsky壳修正对裂变势垒的影响。 理论计算的锕系区重核自发裂变半衰期与实验值符合得很好， 表明包括微观壳修正的GLDM可以成功研究重核的自发裂变性质。 The spontaneous fission half lives of the actinides are calculated by the WKB approximation and the potential barriers are constructed by a General Liquid Drop Model (GLDM) including the proximity energy， the mass and charge asymmetry， and an accurate nucleus radius. The microscopic shell correction which plays a key role for the spontaneous fission barrier is considered for the first time. The two parameter quasi molecular shape and the proximity are described in details within the GLDM. The effects of the microscopic shell correction and proximity energy for fission barrier are discussed separately. The calcula ted spontaneous fission half lives for the actinides reasonably accord with the experimental data， implying the present GLDM combined with the microscopic shell correction can be used to study the spontaneous fission properties of heavy nuclei successfully.

Theoretical Study on Spontaneous Fission of Actinides

The spontaneous fission half-lives of the actinides are calculated by the WKB approximation and the potential barriers are constructed by a General Liquid Drop Model(GLDM) including the proximity energy,the mass and charge asymmetry,and an accurate nucleus radius.The microscopic shell correction which plays a key role for the spontaneous fission barrier is considered for the first time.The two-parameter quasi-molecular shape and the proximity are described in details within the GLDM.The effects of the microscopic shell correction and proximity energy for fission barrier are discussed separately.The calcula-ted spontaneous fission half-lives for the actinides reasonably accord with the experimental data,implying the present GLDM combined with the microscopic shell correction can be used to study the spontaneous fission properties of heavy nuclei successfully.